Pressure release



Aug. 18, J SHARP I PRESSURE RELEASE Filed March 4,: 1935 Infantm Elia/4Ska? Atto'rnev Patented Aug. 18, 1936 UNITED STATES PATENT OFFICE2,051,276 PRESSURE RELEASE John A. Sharp, Marshall, Tex.

Application March 4, 1935, Serial No. 9,295

2 Claims. (01. 137-139) This invention appertains to new and usefulimprovements in automatic pressure release means for pressure systemsand more especially designed to accommodate fluid pressures in crudeoil, water and other material conveying conduits.

The principal object of the present invention over my co-pendingapplication of which the present application forms an improvement is toprovide electrical means for suddenly allowing for the escape ofexcessive pressure. The above referred to application is identified bySerial No. 742,315, was filed August 31, 1934 and bears the titleAutomatic release valve.

During the course of the following specification and claims otherimportant objects and advantages of the invention will become apparentto the reader.

In the drawing:

Figure 1 represents a vertical sectional view of the magnetic valverelease, showing the mechanism in set position.

Figure 2 represents a vertical sectional View of the magnetic valverelease, showing the release in operated position. v

Figure 3 represents a fragmentary horizontal sectional view through thevalve controlled by the magnetic release.

Figure 4 represents a perspective view of the armature catch.

Figure 5 represents a perspective view of the valve engaging lever.

As is clearly shown in Figures 1 and 2, an electro-magnet 5| is mountedon the panel board 24 and a rockable armature 52 cooperatively supportedby the bracket 53 on the front side of the board 24 is located withinthe magnetic sphere of the magnet 5|. A spring 54 interposed between thearmature 52 and the board 24 serves to normally urge the armature 52outwardly so that its catch, which it carries and which is denoted bynumeral 55 will remain engaged with the free end of the trip arm 56which is pivotally connected at its lower end as at 51 to the bracket58. A bracket 59 on the board 24 above the valve 23 pivotally supportsits depending valve stem engaging lever 60. Obviously, when the catch 55is holding the trip arm 56, this trip arm 56 is engaging the outwardlycurved end portion 6| of the lever 60 so as to hold the stem 29 urgedinwardly with the valve 28 seated.

While the foregoing specification sets forth the invention in specificterms, it is to be understood that numerous changes in the shape, sizeand materials may be resorted to without departing from the spirit andscope of the invention as claimed hereinafter.

Having thus described the invention, what is claimed as new is:

1. A control for valves comprising a slidable 15 valve stem, anelectrical magnet mounted adjacent the stem, a rockable armatureprovided with an outstanding catch member thereon, a pivotal arm fordisposition across the free end of the stem in one direction, a secondpivotal arm dispo'sed across the free end of the stem at a point .beyondthe first mentionedarm and extending beyond the first mentioned arm andextending in 35 an opposite direction to engage with the catch at thefree end thereof, said first mentioned arm engaging at its free end thepivotal end portion of the second mentioned arm, the free endportion ofthe first mentioned arm being curved lat-V 40 erally to provide abearing point for the second mentioned arm.

JOHN A. SHARP.

